<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>绘制棋盘</title>
    <style>
        .board {
            width: 399px;
            height: 399px;
            border: 3px solid #654321;
            border-radius: 5px;
            background-color: #deb887;
            /* 绘制横线竖线 */
            background-image: 
                linear-gradient(to bottom, transparent 39px,  #654321 39px),
                linear-gradient(to right, transparent 39px,  #654321 39px);
                background-size: auto 40px, 40px auto;
        }
    </style>
</head>
<body>
    <div class="board"></div>
</body>
</html>
